If the space size taken by the old file is different from the space size needed
by the new file, the space needs to be adjusted for the new file to fit and this
operation calls the CZipActionCallback::cbMoveData
callback.

If you plan to delete more files at once, use the methods that take arrays as arguments
- they are optimized for multiple file deletion.

If you don't want to physically remove the file from the archive, but only from
the central directory (e.g. to save the processing time or for safer archive modifications),
use the CZipArchive::RemoveFile method and set the
bRemoveData parameter to false.

Changing the Modification Time of Files Inside an Archive

The modification time of the file is written in both local and central headers.
To modify it, you need to update the time stamp in these both locations to keep
the archive consistent. Follow the steps below to do it:

Be sure that the existing local header information was already read from the archive.
It happens when a file is opened for extraction. Otherwise, you can also update
it by calling the CZipArchive::ReadLocalHeader() method.

To update the central directory, it first needs to be removed from the archive.
The central directory is removed from an archive, when a modification such as adding,
deleting, renaming, encrypting or other takes place. However, if you have not performed
such a modification on the archive, you can call the CZipArchive::RemoveCentralDirectoryFromArchive()
method to force the central directory removal.

Storing Modification, Creation and Last Access File Time (High Resolution)

The default file modification time has 2 seconds resolution. To store the modification time in full resolution and additionally
store creation and last access times,
call the CZipArchive::SetFullFileTimes() method after opening an archive. It will affect all
files added afterwards to the archive.

The file times storage format is compatible with other software (e.g. WinZip) and the software that doesn't support it,
will just
use the regular modification time stored inside of the archive the standard way.

The information is stored inside of an extra header in the central directory only, so modification of the high resolution
file times doesn't need the local header to be removed. Only the central directory needs to be updated (see Modification of Archives: Replacing, Renaming, Deleting and Changing Data for more information). However, when updating the modification time, it is recommended to update
the local header as well (as described previously) to keep the standard modification time in sync with the high resolution
time, so that the software that doesn't support the high resolution times can still set the modification time properly.

Controlling Windows System File Cache

When performing extensive file operations (especially on large files under a 64-bit
system) you may notice that large amount of memory is being used. This is may be
related to the growing size of Windows System File Cache. Resolving of the issue
is beyond the scope of the ZipArchive Library, but here are possible solutions: